tensorflow / tensorflow/text

Span metrics Precision/Recall/F1 are missing (NER)

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Description

Hi,

Recent updates in tensorflow_text provide capabilities to deal with full tensorflow name entity recognition (NER) using offsets_to_boise_tags and boise_tags_to_offsets. It looks that metrics for ner are still missing... however some previous developments show implementations on that sense (https://github.com/tensorflow/text/pull/262) but it seems it has been moved away right after. Is there any plan to make them officially available into tensorflow_text.metrics?

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First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start by reviewing the tensorflow_text.metrics area and the existing NER helpers offsets_to_boise_tags and boise_tags_to_offsets. Use the referenced tensorflow/text pull request 262 as historical context for the earlier implementation. Done means making span-level Precision, Recall, and F1 metrics officially available for full TensorFlow NER.

Written by the indexing model from the issue text.

Assessment

Tech stack
tensorflow
Domain
machine-learning
Issue type
Feature
Difficulty
5/5
Estimated time
Over a week
Activity status
Stale
Clarity
Needs clarification
Newbie friendliness
30/100

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